The Power Parameters Automation Monitoring System Based On Virtual Instrument

The electric power quality parameters test is the important foundation of assessing power quality. It is the precondition of quality, safety, economy also. Traditional power parameters monitoring system mainly based on hardware is bulky and crude, it has long adjusting period and high cost, and any change and update must change the hardware and the structure of the system, so it is unsuitable for modern instrument technology.In accordance with the present situation and insufficiency of traditional power parameters monitoring system, this paper develops an original electric power parameters automation monitoring system based on Virtual Instruments techniques. It can measure, analyze, calculate, display, print and save the measurement results of electricity quality parameters fast, exactly and reliably. The power parameters monitoring system has nimble interface between the system and the user, and the function of system can set by user properly, so it has enormous applied market. The hardware mainly adopts the data acquisition card produced by National Instruments Corporation. By the use of Lab VIEW software platform, the virtual instrument monitoring system can monitor data immediately, on line, conveniently and accurately, it can remarkably remote monitors also, achieves "The software is the instruments".This paper expounds the elements and working principles of the electric power parameter automation monitoring system, determines the totality scheme of system, introduces LabVIEW software platform, accomplishes the feasibility and theory analyze, completes the program design and points out the method of VI resolving scheme emphatically. At the same time, it gives display results of monitoring system. It is the development trend of future instrument system by the use of software to bring about the hardware function, so it is the study emphasis of this paper also. The concluding remarks discusses the prospects of the electric power parameters monitoring system and summaries the deficiencies in the actually operating, it puts forward the possibly improvement of the system, too.